T=0 Pairing Correlations and Band Crossing Phenomena in N=Z Nuclei

Summary, in English

The structure of the N=Z nuclei Zn-60, Ga-62, Ge-64 and Kr-72 has been investigated at GASP spectrometer through the S-32 + Ca-40 and Ca-40 + Ca-40 reactions at 140 and 160 MeV, respectively, using reaction channel selection with the ISIS Si-ball. The high spin states of such nuclei have been investigated searching for the four quasi-particle g(9/2) alignment. TRS calculations have been performed for the N=36, 38 and 40 Kr isotopes. In the case of Kr-72 th, four quasi-particle g(9/2) alignment is observed to be significantly delayed in rotational frequency with respect to the heavier Kr isotopes. Such a delay contradicts the predictions of mean field calculations and mag; be interpreted as the first sign of additional correlations in the T=0 pairing channel.

• Author: G. de Angelis; Claes Fahlander; A. Gadea; E. Farnea; W. Gelletly; A. Aprahamian; A. Axelsson; D. Bazzacco; F. Becker; P. G. Bizzeti; A. Bizzeti-Sona; F. Brandolini; D. de Acuna; M. De Poli; J. Eberth; D. Foltescu; S. Lenzi; S. Lunardi; T. Martinez; D. R. Napoli; P. Pavan; C. M. Petrache; C. R. Alvarez; Dirk Rudolph; B. Rubio; S. Skoda; P. Spolaore; G. Thomas; C. Ur; M. Weiszflog; R. Wyss
• Publishing year: 1998
• Language: English
• Pages: 426-433
• Publication/Series: Nuclear Physics, Section A
• Volume: 630
• Issue: 1-2
• Links: http://www.sciencedirect.com/science/article/pii/S0375947497007811; http://dx.doi.org/10.1016/S0375-9474(97)00781-1
• Document type: Journal article
• Publisher: Elsevier
• Topic: Subatomic Physics
• Status: Published
• Research group: Nuclear Structure
• ISBN/ISSN/Other: ISSN: 0375-9474